David m



(No Model.)

D. M. PARRY.

HUB BORING MACHINE.

IIII.

PatentedI'eb. 12,1889.

WTM'SSES.

N. PUERS, Fhum-Limngnpner. wnhmgmn D. C.

UNITED STATES PATENT OEEicE.

DAVID MjPARRY, OF INDIANAPOLIS, INDIANA.

HUB- BORING MACHINE.

SPECIFICATION forming part of Letters Patent No. 397,816, dated February l2, 1889.

Application filed April 2l, 1888. Serial No. 271,408. (No model.)

To all u'tom it may concern.:

Be it known that I, DAVID M. PARRY, a citizen ofthe United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Hub-Boring Machines, of which the following is a specification.

The object of my said invention is to produce a machine by means of which the holes in the hubs of wheels into which the boxing or skeins are to be inserted can be quickly and accurately bored; and it consists in a simple and effective clamping and centering device, whereby the wheel is brought accurately to the position to be bored, and there held securely during the operation of boring the hub.

It further consists in certain details of construction, all as will be hereinafter more particularly described and claimed.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l is a side elevation of a machine embodyingl my said invention; Fig. 2, a central vertical sectional view looking toward the right from the dotted line 9 2 in Fig. l and upwardly from the same dotted line in Fig. 3; Fig. 3, a horizontal sectional view looking downwardly from the dotted line 3 3 in Figs. l and 2; Fig. 4,21 detail sectionalview similar to a portion of Fig. 2,but on an enlarged scale; and Fig. 5, a detail sectional view looking upwardly from the dotted line 5 5 in Fig. 3.

In said drawin the portions markedArepresent the frame-work of the machine; I3,the shaft to the upper boring-tool C, the shaft to the lower boring-tool l), the bearing in which the center of the clamp for the wheel is mounted, and E said clamp-center.

The frame A consists of an upright portion, upon which are bearings for the shafts B and C, and a horizontal portion forming a table upon which the wheel to be operated upon is placed, which latter portion carries the bearing for the clamp, and also supports the arms of said clamp.

The shaft B carries the upper boring-techo, which commonly does the greater part of the work. It is mounted in bearings B and B2 upon the frame A, and between said bearings upon said shaft is placed a pulley, B3, through which the shaft may freely move longitudinally, but which kept from revolving on said shaft by means of a spline, and said shaft is driven by means of a suitable belt, b3, running to this pulley. Said shaft and the boringtool, h, carried thereby are operated vertically by .means of a lever, 134, which is pivoted to an arm, A, on the frame, and connected to said shaft by a link, U, and Van intermediate lever, B, which is connected to a sleeve, Il, on said shaft, and pivoted to an arm, A, on the framework by a pivot, ai. A counter-balance, B, is preferably provided, by which the shaft and the tool thereon are held up out of the way, except when forced down by the operator by means of the lever.

The shaft C carries the lower boringtool, c, which generally is used only to trim out the end of the hub to receive the nutwhich (after the wheel is completed and placed on the axle) is placed on the end of the axle to hold the wheel thereon. It is mounted in bearings C and C2 on the frame A, provided with a pulley, CS, and driven by the belt cS in a similar manner as the shaft B is mounted and driven. Itis operated by means of a lever, C",which is pivoted to the frame-work and engages with said shaft, as shown. It is kept down out of engagement by its own weight, except when forced up by the operator, and therefore needs no counter-balance.

The bearingD is in the form of a heavy ring, and is fixedly secured centrally upon the portion of the frame-work forming the table upon which the wheels are placed while bein'g operated upon and supports the clampcenter firmly in position.

The clamp is composed of a central portion,E, and several arms, (preferably four,) E', E2, E, and E", and an arm or lever, E5, by which itis operated. The clamp-arms are pivoted at their inner ends tangentially upon the center E, and their outer ends rest in bearings upon the frame-work, as shown. The operating arm or lever is secured rigidly to said center and extends out to near where the operator is intended to stand. It preferably has a suitablyforme l edge to engage with a rackbar, a, upon the frame-work, (see Fig. 3,) and thus the clamp is held firmly into engage ment with the wheel.

IOO

The operation is generally as follows: The machine being in operation and the wheel lieing ready lio have ilS hul) bored ont, Said wheel is plaeed upon the machine. rlhehandle or lever E is l'hen mvnngaronndnnlil the lnrn ed-n p ends of lille elai'np-a rms (fome lightly against The periphery o'l' the wheel,whieh noli only elamp the wheel lirmly in position, lint bring,l the eenlier of ile hul exaelfly lielo'w lhe eenlier of lihe boring-lool l). ',lhe shaft il then forced down by meanI of lille handle or lever B", and the boring-lool Thus Caused to linish llhe hole in l'he hul). After lhsiedone the Shaftv (j .ari' \'iiiglfl1e boring-lool rf, iS forced j up by means of the lever and the other end of lihe huh is time finished. The handle or lever E 'ie l-hen diseilgaged from lille raek u, Said lever swung hack, @lening the clamp, the wheel removed, and the operation repealed, which, as will be readily understood, is a very simple one, which ean he rapidly and eeonomieally performed.

Haring thus fully deserilnal my said invention, what/I elaim as new,and doeii-erro secure by Letters Patent, iS

l. The eolnllilialion, in av hnli-lloringl machine, with the boring-tools and means foreperating the same,of aclamp Aforcentering and holding the wheel, consisting of a revoluble center having several arms tangentially Seenred thereto, the outer ends whereof are adapted lo engage with the periphery7 of the wheel, an operating handle or lever, an d means for seem-ing,` itI in operativeposition, Substantially as Set forth.

L. TheCombination, in a hnl'l-lioring machine, of the framework,the shaft forthe'boriiigtool, bearings on Said frame-work forsaid shaft, a pulley loosely mounted on said shaft hel-Ween said bearings and held thereon by a spline, an operali11g-lever for moving said Shall, and The wheel-clamp consisting of the revolnlile eenler l1a\\'ingseveral arms adapted lo en gag-e with the wheel langen tial ly secured liherelo, all substantially as; eet forlh.

ln wilznees whereof l have hereni'illo sell my hand and Seal, at Indianapolis, Indiana, this i lSl'h day of April, A. D. 1838.

DAVID M. PARRY. ll' illnesses:

C. BRADFORD, F. W. WOOD.

lfL. 5.] 

